//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the "Instituto Nokia de Tecnologia" and
-// is distributed under the University of Illinois Open Source
+// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
-// This file contains the ARM implementation of the MRegisterInfo class.
+// This file contains the ARM implementation of the TargetRegisterInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef ARMREGISTERINFO_H
#define ARMREGISTERINFO_H
-#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "ARMGenRegisterInfo.h.inc"
namespace llvm {
const TargetInstrInfo &TII;
const ARMSubtarget &STI;
private:
- /// RS - An instance of the register scavenger.
- RegScavenger *RS;
-
/// FramePtr - ARM physical register used as frame ptr.
unsigned FramePtr;
public:
ARMRegisterInfo(const TargetInstrInfo &tii, const ARMSubtarget &STI);
- ~ARMRegisterInfo();
+ /// emitLoadConstPool - Emits a load from constpool to materialize the
+ /// specified immediate.
+ void emitLoadConstPool(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator &MBBI,
+ unsigned DestReg, int Val,
+ unsigned Pred, unsigned PredReg,
+ const TargetInstrInfo *TII, bool isThumb) const;
/// getRegisterNumbering - Given the enum value for some register, e.g.
/// ARM::LR, return the number that it corresponds to (e.g. 14).
static unsigned getRegisterNumbering(unsigned RegEnum);
- /// Code Generation virtual methods...
- bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI) const;
-
- bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI) const;
-
- void storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned SrcReg, int FrameIndex,
- const TargetRegisterClass *RC) const;
-
- void loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned DestReg, int FrameIndex,
- const TargetRegisterClass *RC) const;
+ /// Same as previous getRegisterNumbering except it returns true in isSPVFP
+ /// if the register is a single precision VFP register.
+ static unsigned getRegisterNumbering(unsigned RegEnum, bool &isSPVFP);
- void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *RC) const;
+ /// getPointerRegClass - Return the register class to use to hold pointers.
+ /// This is used for addressing modes.
+ const TargetRegisterClass *getPointerRegClass() const;
- MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
- int FrameIndex) const;
-
- const unsigned *getCalleeSavedRegs() const;
+ /// Code Generation virtual methods...
+ const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
- const TargetRegisterClass* const* getCalleeSavedRegClasses() const;
+ const TargetRegisterClass* const*
+ getCalleeSavedRegClasses(const MachineFunction *MF = 0) const;
BitVector getReservedRegs(const MachineFunction &MF) const;
- bool requiresRegisterScavenging() const;
+ bool isReservedReg(const MachineFunction &MF, unsigned Reg) const;
+
+ bool requiresRegisterScavenging(const MachineFunction &MF) const;
bool hasFP(const MachineFunction &MF) const;
+ bool hasReservedCallFrame(MachineFunction &MF) const;
+
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const;
void eliminateFrameIndex(MachineBasicBlock::iterator II,
- RegScavenger *RS = NULL) const;
+ int SPAdj, RegScavenger *RS = NULL) const;
- void processFunctionBeforeCalleeSavedScan(MachineFunction &MF) const;
+ void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
+ RegScavenger *RS = NULL) const;
void emitPrologue(MachineFunction &MF) const;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
// Exception handling queries.
unsigned getEHExceptionRegister() const;
unsigned getEHHandlerRegister() const;
+
+ int getDwarfRegNum(unsigned RegNum, bool isEH) const;
+
+ bool isLowRegister(unsigned Reg) const;
};
} // end namespace llvm